This is another catalog quest, but it definitely isn't for the faint of heart if they are also frail of body. If you are close enough to catalog these critters, you are very close to aggro range as well.

Other than the vile strider, monkey and escaped baby gator, these are aggressive mobs. There is, however, a trick that will make this a lot safer. Target a non-aggro mob that is close to you, hit Catalogue Creature, then re-target the dangerous mob that is too far away and it will update no matter what the distance is. Line of sight is all that is required for this to work.